TTE360 Upgrade Performance Turbocharger 1.8T 20V S3 / TT / Leon K04 Hybrid


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Jul 9, 2014
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TTE360 Upgrade Turbocharger

Introducing our pinnacle power stage while based on the original turbocharger the TTE360 performance turbocharger for the 1.8T. Offering an estimated 360PS with correct hardware & software, near Plug & Play Upgrade with the fantastic response and OEM reliability. OEM+

Engineered & Enhanced

TTE360 is an evolution from our TTE340 stage and is based on a brand new Genuine BorgWarner K04 turbocharger, that we dismantle and set about upgrading as Turbo Engineers.
To produce a TTE360 K04(K04 housings K16 turbine) upgrade turbocharger we use a much larger TTE 7+7 billet compressor wheel, chosen because it is highly efficient. We CNC Re-Profile the compressor cover in-house to an optimised tight tolerance and finish to ensure maximum compressor efficiency is given. 7+7 Blade technology enables lower boost threshold giving the user faster spool-up at lower engine speeds while providing the high boost with much less heat for powerful top-end performance.

A key part of driving the large 7+7 compressor and in turn making this unit produce the huge power advantage overstock and also our other stages is machining and fitting a far larger but lightened BorgWarner K16 curved clipped turbine and shaft, while still keeping the K04 core, this is not so easy to do. This K16 turbine gives much lower back pressure and keeps EGT lower compared to stock K04 turbine or clipped stock.

We CNC re-profile the exhaust turbine housing to optimised profile and gap to take a larger K16 turbine and shaft we use on this stage, this turbine is a Genuine BorgWarner item. We lighten and also give the turbine a special curved clip of a specific amount. The clipping is a TTE grinding process to the turbine blade tips, curved to alleviate stress from the process. Clipping reduces blade area, increasing gas flow and so reducing backpressure and lowering exhaust gas temperatures, allowing safer higher boost levels. This process also gives a secondary advantage of removing some mass. Lightening the turbine reducing rotational mass, improving moment of inertia, giving faster response.

The intake to the compressor wheel is a CNC milled billet piece with 58mm Dia opening this gives a smooth transition from the intake pipework to the larger compressor to lower turbulence and maximise velocity. The boost discharge outlet is also ported to again smooth the transition to the boost pipework to reduce turbulence.

Attention is given to increase the standard exhaust port size(40mm approx) We CNC mill, porting the turbine housing exhaust and throat and entry size to approx 48mm diameter for maximum flow from an upgraded manifold and so improving efficiency to the bigger turbine used.

Special profile 360 deg high-performance TTE motorsport journal bearing is fitted, to remain durable at higher loads with no loss in transient response.

The actuator used is uprated sprung Genuine BorgWarner unit, fitted with our reinforced stainless steel clamps and hardware for trouble-free operation. This also can be modified and set to customer needs and specifications if required.


Precisely balancing our turbochargers is a key critical factor to become a TTE upgrade unit as longevity and performance are paramount. Good balance improves acoustics also. Subsequent great care is taken with all TTE turbochargers to achieving our balance standards. Firstly parts are balanced at slow speeds up to 2800RPM in multiple planes using our single parts machine, then components are assembled and then the CHRA are dynamically balanced, but this time depending on application at up to 250,000 RPM in multiple planes using our in-house VSR machine to acquire the ultimate equilibrium, to a standard far higher than OEM. Each turbocharger is supplied with serial numbered balance test result document.

Key Points

Genuine BorgWarner Housings
TTE Billet 7+7 compressor(proven at over 450ps)
Genuine BorgWarner K16 lightened Turbine, Special Curved Clipped Blades (Inducer 55mm / Exducer 49mm)
TTE 58mm Billet CNC milled Intake Entry with 3 Viton orings
TTE 46.5 mm Turbine exhaust entry CNC milled and ported
TTE Ported Boost Discharge pipe
Optimised Compressor Cover Machining Clearances
Genuine BorgWarner Uprated & Reinforced Actuator
TTE Reinforced Bearing system
Dynamically Balanced (Supplied with test document)
Fitment As Original. Plug & Play (just needs supersize intake and adapter)
360PS Capable
Designed, Machined & Built by TTE in Germany

Pricing :


Designed for use with the CreationsMotorsporrt 3" (80mm) large bore turbo intake pipe ( )

80.00 Euro inc VAT

very good, amazing this litle turbo
do you have some dyno
USS Performance have a unit in testing and will share as we go.

Little comparsion shot

The problem os the turbine housing.
Turbine exducer 49mm ia very Nice But the wall should be very thin.
Do you guarante its reliable?
Have you ever machined a BWTS K16 profile contour to this housing to know the wall thickness, and where exactly do think its too thin?

Only we are happy or would not put in production

We stand behind all TTE turbo's.
just k04 with exducer 44,5mm. i will try to fit rs6 turbine housing in the k04-023

good work, i love your tte360.
We use rs6/tfsi size in TTE300/340 Stage and yes it offers some more hp.
No sorry. We do not sell parts at all.

I am interested in the reconditioned and upgraded TTE360 K04-023 turbo. How do I order one? Your website seems to be down for maintenance? I am located in the UK.

Many thanks.
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Little compressor comparison.

S3 K04 1.8T vs TTE360 1.8T

As yet not determined. The aim was 360PS

But others do very similar turbo from what i consider smaller spec now and claim 400HP or so
Seat Ibiza
TTE360 Turbo
Chinafold (JBS copy exhaust manifold)
Forged rods ( stock piston )
1000cc injectors
S3 maf
98 ron fuel (no wmi)
C2 Motorsport custom map at 1.5 bar peak

Supplied and support by USS Performances

Result 363PS 490Nm (36°C temp ambient)

More to come soon when car revisits soon for higher boost tune after fix of a few issues (boost leak and sick MAF) really good result as Hot temps and few issues... The response looks great and as said more to come!


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